Newly Posted Articles

VIRUS: Groups and Methods of Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago As defined by the Intenational Committee for the Taxonomy of Virus, and showing those that infect: orchids and their insects of transmission; list of names of orchid viruses. A84-507 Read More

VIRUS: How to Detect It

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A diagnostic technique developed to detect Cymbidium Mosaic and Odontoglossum Ringspot, the double radial diffusion test with antibodies produced by immunizing animals, usually rabbits;refer to A83... Read More

VIRUS: In the Wild

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cypripedium acaule -- in the woods in Manitoba was found to have symptoms which were identified as virus by Plant Science personnel. CA84(2)-19 Read More

VIRUS: Incidence

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Table showing frequency of infection of about 2 0 genera by CMV and ORS and related to length of time in cultiva- tion; refer to W10-281 Read More

VIRUS: Indicator Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Five plants listed with details ; refer to AH86-15; seed for Gomphrena globosa and Cassia occidentalis can be purchased from suppliers; address given. A86-251; six plants listed, with details of us... Read More

VIRUS: Interferon Seen as Inhibitor

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Minute amounts sprayed on a plant can stop a virus infection in an hour, is harmle s s to plants and humans; scientists are experimenting. CA84(3)-19; AU84,Sept. Read More

CORK TILES: Pressed, Commercial Sheets

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Can be used as mounts for equitant oncidiums; cut in strips 2" by 12", and place four plants on each strip with a thin pad of sheet moss or coconut fiber and tied with bits of nylon stocking. A86-677 Read More

CRIPPLING OF FLOWERS: In Cattleyas; Causes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago C. Intermedioflava (C. intermedia x L. flava) produce deformed petals on 50 percent of its flowers on every clone; when crossed with Sophronitis grandiflora the same deformity showed up; is the cri... Read More

GREENHOUSES: Coverings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Heat loss per BTU per sq. ft. per hour at zero degrees F. is: glass -- 1.13; doubled glass -- 0.65; triple glass -- 0.47; PVC -- 0.92; Fiberglass -- 1.00; Acrylic (Plexiglass) -- 1.00; Acrylic doub... Read More

GREENHOUSES: Energy Efficient

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Ten points emphasized for the Maryland area: the temperature below the earth frost line is 13 dC; solar energy is always available; a southern exposure is necessary; the sun's rays should strike th... Read More